【简答题】已知抛物线 及点 ,直线 的斜率为1且不过点P,与抛物线交于A,B两点。 (1) 求直线 在 轴上截距的取值范围; (2) 若AP,BP分别与抛物线交于另一点C,D,证明:AD、BC交于定点。
【判断题】弗洛伊德倡导文明人类应该运用古希腊到德国古典哲学的思路来理解人和文化。()
【单选题】That is, until 2012, when Drs. Edith Widder , Steve O’Shea and Tsunemi Kobodera filmed the elusive and mysterious giant in its natural deep-sea habitat for the first time ... (Para. 3)
A.
It was not until 2012 that Drs. Edith Widder , Steve O’Shea and Tsunemi Kobodera filmed the elusive and mysterious giant in its natural deep-sea habitat for the first time …
B.
We knew very little about the elusive and mysterious giant until 2012, when Drs. Edith Widder , Steve O’Shea and Tsunemi Kobodera filmed it in its natural deep-sea habitat for the first time …
【单选题】已知任意直线经过一点坐标及直线斜率,可列( )方程。
【判断题】7在国家法定节假日和学校寒暑假期间,博物馆可以闭馆。
【单选题】以下哪一项不是常见的计算机自动激发病毒的方式?()